I think the Airbnb description of the place is a little misleading. It says private room but it should say 4-person dorm bedroom.
The bed itself is great. Very comfy bed, bedsheets and everything is very clean. One of the best hostel bed I found. Unfortunately the person I shared the room was so smelly like he didn't take showers for days. The room is so small so the smell is very strong and really filled the room and there is no escape. Because I've checked in late in the night so there no way I can change the room. I odor was so terrible I had a hard time sleeping. And that's not all, I was woken up by the sound of that person calling someone over the phone on the bed. I had to tell him 3 times before he stopped the talking.
The locker key that was given to me didn't work so I didn't use it. The lamp over the right of the bed was made of glass material and could be dangerous if you hit your head onto it. I think that is a bad design.
One funny thing is that the owner said the room is male only but in the morning another woman checked into the room. So I don't know. Despite of that, the location of this place is very attractive for someone who has a car and want to park for free in Silom road.